感谢分享，另外这里想请教大神一道数学题，如下：
At a dinner party, 5 people are to be seated around a circular table. Two seating arrangements are considered different only when the positions of the people are different relative to each other. What is the total number of different possible seating arrangements for the group?
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号
发表于 2016-10-22 22:53:16
